PH26626A - Contact member for electrical conductors - Google Patents

Description

oo BACKGROUND OF THE INVENTION

Field of the Invention

The invention relates in general. to: communiction aysten conductors and in particular to a new and usegul contact material leaving a contact gelot with a metallised ‘connective system. }

Contact members for electrical conductors are required particularly for components of 19 telecommunicatlion gsytems, as connector and digconnector banks, wive connectors, "printed- circuit boards and the like. Herein, the contact member is composed usually of an electrically conducted metal material and is inserted into the component composed of an insulating material. As insulating materials for connector and disconnector banks as well as for wire connectors, commonly thermoboards plastics are used, and for printed-circuit boards, boards based cn paper and impregnated — 2 . } ‘ i. “ip .

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: . which are intended particularly for components of telecommunication systems. The contact member can in a preferred manner be formed as . one plece together with the component from a bh cComaon ineulating material, the contact section being, thereafter, provided with a metallised surface.

The contact member according to the invention is rarticularly suitable for 18 application with printed-circuit boards, for which the contact member according to the invention can be formed as one piece with the printed-circuit beard. Further, the contact member according to the invention is advantageously employable for constructing wire connectors. Therein, a stripped conductor can be clamped-in between conically narrowing contact sections.

Co In a particularly preferred manner, the - 20 contact sections are provided with cutting . edges forming the contact slot, the said }

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cutting edges being formed from the insulating . material and being provided with metallised surfaces which cut into the covering of a non- stripped conductor when pressed-in and thus eatablishing an electrical contact between the meballised surfaces snd the conductor core.

Accordingly, it is an object of the invention to provide a coomuniecation system contact for conductors which have an insulating 1 material cover which way be removed partially and which comprises first and second adlacent contacl members made of losulating material and declining post porbtlous having facing erldes which define a contact alot therebetween and which have metznllised surfaces which taper inwardly gc sxe to provide a frictional , engagement eurface with the contact at a location in which the cover portion has been ‘ removed.

A further object of the invention is to . provide a contact construction in which the . CC. =

CM gE ee } BAD ORIGINAL 9 spaced post elements have metallised surfaces which extend therebetween into a . gradual inwardly extending V- ghaped slot which receives a conductor and which may engage with a sbtripped away portion or extend into the insulated covering material of the conductor to engage with a contact portion thereof.

A further object of the invention is to provide a contact made of an insulating material having netallised surfaces which are simple in desclgn, rugged in consturction and economical to manufacture.

The various featurce of novelty which : characterize Lhe tnvention are pointed out with 156 particularity in the clalme annexed to and forming a part of this disclosure. For a "better understanding of the invention, its operating advantages and specific objects obtained by its uses, reference uis made to the accompanying drawings and descriptive matter in which preferred embodiments of the invention

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BRIEF DESCRIFTION OF THE DRAWINGS

In the drawings:

FIG. 1 is a perspective representation of contact member of a first embodiment of the invention; :

FIG. 2 is a perspective representation of a contact member formed form a printed-circuit beard in the first embodiment: 12 FIG. 3 is a perspeclbive representation of several contact members arranged side-by-side ' and formed from a printed-circuit board in the first embodiment;

FIG. 4 is a perspective representation of two contact members constructing a wire connector in the first embodiment;

FIG. 5 ie a longitudinal section through a contact member formed from a printed-circuit board in a second embodiment of the invention;

FIG. 6 and 7 are a perapective representation of the members according to the

QraQa E1300 gariaing ! sara’ vy BEETS! oT oh % uk Fah second embodiment; } FIG. 8 is a detail of the contact member of the second embodiment according to FIGS. 6 and Ti

FIG. 9 is a top view of a contact member of a third embodiment of the invention;

FIG. 12 is an enlarged detail of a contact i . member according to FIG. 9;

FIG. 11 ia a longitudinal section through the contact slot of the contact member according to FIG. 10. oo

FIG. 12 is a top view on the contact slot of the contact member acording to FIG. 1@;

FIG. 13 is a top view on a connector socket of telecommunication systems with a built-in printed-circuit board having contact members according to a fourth embodiment;

FIG, 14 is a crosc-section through the connector socket according to FIG, 13 with 21 opened-up halvea of the housing:

FIG. 15 is a longitudinal section through the connector socket according to FIG. 13;

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FIG. 16 is =» top view on the front side of the locking member for the printed circuit board of the connector socket according to FIG. 13; b FIG. 17 ie a long ituwlinal section through a contact member of a fifth embodiment;

FiG. 19 is a top view on the locking pember of the aentact member according to FIG. 17; . 19 FIG. 19 ig a cross-section through a printed-cireult board with a contact member according to a gizxth embodiment; : F1G. 20 ja a bottom view of a pressure piece of the contact member according to FIG. 19; and

FIG. 21 and 22 are aide views of the pressure pismo according to FIG. 20.

DETAILED DESCRIPTION OF THE DRAWINGS

As shown in FIOS8., 1 to 3, a ~ontact member

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VIO sdge 1 re 1 for electrical conductors 2, in particular for cable wires of telecommunication systems, comprises two electrically conductive contect gections or post portions 4 and 4° having facing sldes which define a contact slot 3 there between. The contact sections 4 and 47 are formed from an insulating material 5 and are provided with metallised areas or surfaces 6. The ineulating material 5 is formed to 113 block -shaped elevations 7, between which the V- shaped contact slot 3 ig disposed, the base B ’ of which is Flattened. The eide faces of the

V-ghaped contact e&lot 3 and the adjacent sections of the elevations 7 are provided with the metal ocurfaces 6 formed on the contact sections 4 and 4°. The metallised surfaces 6 are generated by vapor-deposition . or electrolytical deposition of conductive metal material on the surfaces of the insulating material 5. . : As shown in FIG. 1, the conductor core 11 of the conductor 2 is stripped and is clamped-

OTrda 2 a0 100i 2 gy gp] - 18 - rn ) ¥903 49Tzam in between the conically narrowing V-shaped contact slot 2. Thereby, an electrical contact connection is eptablished between the conductor core 11 and the metal surface 6. which is . 5 guided to a conductor ection point in a manner nob shown in greater detail.

According to FIG. 2, there are elevations T on a carrier element 9, which may be formed by a printed-cirouit board. According vo FIG. 3, 12 there are geveral contuct section 4, 4° each including a contact slot - 3 therebetween arranged side-by-side on 2 carrier element 9.

The contact section "4,4" ete. of adjacent conhacts slots 3 are provided with nétallised gurfaces 6, gr, 6°77 which are electrically separated from one another. This contact member 1, Loo, may he arranged on a printed circuit board formed by the carrier element 9.

The elevations 7 of Lhe carrier element 9 21 representing Lhe printed-circult board are : Formed as one piece together with the carrier element 2. . - 11 - [A ,

According to FIG. 4, two pairs 18 of a wontackt sections 4, 47 including a contact slot i 3 therebebtwesn fs digpossd on a carrier element 9° and are provided with metallised gurfaces 6 being electrically connected with one another for forming a wire connector (FI1G.4). :

The contact members described up to now of the first embodiment require stripping ‘the 12 conductors 2 to the conductor core ii free.

The conductor core 11 is clamped-in into the contact slot 3 of the contact members 1.

There, the gide faces of the contact slot. 3 could hold the conductor core 11 by frictional contact. On the other hand, a soldering action between the conductor core 11 and the metallised contact section 4 could be effected, too. Application of the contact member 1 described heretofore is effected gubstantially for printed-circuit boards being formed from plastic. simultaneously elevations or blocks 7 may be” formed. The metallised — 12 —_ . ; 1 pat Enki) AE

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: loaded members. For forming a desired / a admissible spring deflection of the cutting edges 13, thepe can also be formed from cut- free, triangularly shaped plastic pieces. In either case, it must be made eure that the : trisngularly shaped cutting edges 13 abut, ) after cutting into the covering 12 of the : conductor 2, against the conductor core 11 in a clanping/spring-type Manner. The metallised 14 gurfoces 16 come, thereby, into contact with . the conductor core 11, snch that an electrical : contact connection can be established. : Ae shown in FIG. 5, there ig a free space 18 in the elevations 17 between the cutting edges 13. The elevations 17 are formed as one : piece from the insulating material 15 of the ‘ carrier element 19. :

Az ahown in FIG. 6, the’ opposed cutting © edges 13 forming the contact sections 14 are 2a formed within ~hannels 20 provided in the ipneulating material 15, into each of the

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CLS aT channels one conductor 2 is inserted. The metallised surfaces 16 of both channels 283 are electrically connected with one another, such that, thus, a wire connector is produced. At :

H the free ends of the channels 203, cutting knives 21 are inserted, which separate © gimultaneously the conductors 2 when pressed-in into the cuttlng edges 13 by means of a tool (not shown). 1a « According to FIG. 7, connector tongues 22 can additionally be provided from the insulating material 15 of the contact member. .

FIG. 8 shows an enlarged detail of two opposed culting edges 13, which are in electrical contact by their metallised surfaces 16 with the conductor core 2° when cutting into the covering 12 of the conductor 2.

According to the third embodiment represented in FIGS. 9 to 12, the contact gection 24, 24° formed as metallised edges 256 oo ’ ‘ of the contact member. To the edges 25, pre- edges 27 arranged under a V-shaped aperture angle 26 are assigned. The contact member according to the third embodiment is intended for insertion Inte the plastic bodies of connector snd disconnector banke or plugs or can be Formed as ons plece together with the plugs. The contact sections 24 of the edges 25 : are provided with metallised surfaces 28. These : : 10 are guided to a non-gchown terminal point. A contact member ancording to the third cobodiments can also comprise tec or more contact slots 23, the contact sections 24 of which are connected to one another over common : 15 + metallised surfaces 28.

The fourth embodiment of the contact member shown in the FIGS. 13 to 16 comprises a printed-circuit board 39, in the two border gections of which clamping slots 31 are . 2 provided in combtype manner, the clamping slots having a rectangular cross-section. at least the interior portion of the clamping slot 31 is nt E030 | oo "21 fare

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provided with a metallised surface 32 connected over electrical connechbions 33 with the individual contacts of a plu 34 being mounted centrally on the printed-circuit board 30. On each of the two border sections of the printed- cireait board 32, one: U-shaped locking member 35 ig plugged on, which is provided with slots 38 staggered relative to each other in both legs 36, 37. The VY .ghaped llocking members 30 can be latched on the border sections of the . printed-circenit board 3@, thug allowing an insulation displacement contact of the conduchkors 2. The covering 12 of the conductors 2 are cut-in by the edges of the elanping clots 31 euch that thelr metallised surface 32 comes into conductive contact with the core 2° of the conductors 2. . FIG. 18 ochows a top view on a J-shaped locking member 35 with obliguely extending og slots 38 in the two legs 36, 37 limiting the interior lingitudinal slot 39. Into the slots 38, the non etripped conductors 2 are inserted, ! - . } L7 .

f these being arranged, thus, under an angle relative to the longitudinal slot 39, which is plugged on the border sections of the printed- circuit board 3@ provided with clamping slots 31, thus an insulation displacement contact it effected. . FIG. 14 shows the arrangement of the U- shaped locking members 35 within two half- shells 42 of the housing, which are constructed ' such that the housing formed by the two half- shells 49 is closed, when the locking members 35 are =1id upon the border sections of the printed circuit board 3d.

FIGS. 17 and 18 shew as fifth embodiment a contact member being formed from a comb-type oo printed circuit board 41 and froma locking member 42 being plugged on the free border section of the printed-circuit board 41 and : © beind locked behind latches 43 of the printed- circuit board 41. For generating a spring : action, the printed circuit board 41 is or : nn nr - 18 - ree) ATTAM -

provided in the ave of the latches 43 with longitudinel slots 44 being parallel at the borders, swoch that the outside legs 45 being, thug, oul free, of the printed circuit beard 41 - 5 are formed in Bpr ing bype manner.

Petwssn the outside longitudinal slots 44, additional contact slots 45 are provided in the prianted-cirouit board 41 which provided with } : metalliaed sorfscos 47 0 extending into Lhe 19 contact alos 46. . Tha locking member 42 is provided with a 1tngltudinal slot 48 and with lateral boreholes 49 arranged under an angle relative heretom the

Caopductore 20 are Incerted inte the lateral 106 borsholes 49. By prescing the printed-circuit board 41 into the locking member 42, the coveringe 12 of the conductors 2 are cut-in by

Lhe odes of the contact sglote 46, thug an electrical contact between the conductor cores 11 apd the metallized surfaces of the printed circuit beard 41 are sgtablished. Inatead of 19 - !

HD omainat, & hea the lateral boreholes 49, grooves can be provided for inserting the conductors 2. : The gixth embodiment of the contact member shown in FIG. 19 to 22 comprises a printed- , 5 circuit beard 5@ with a borehole 51 provided with metallised surfaces 52. For pressing a conductor 2 into the boreholes 51, a pushbutton- type locking element 54 is provided . comprising a, pressure surface 53, a receiving 16 groove 55 on the front side opposed to the pressure surface B53, and latches 56, the - © dietance of which to the edge of the pressure : surface BA4 corresponding approximately to the

Co thickness of the printed-cireult-board 50. 156 Into the receiving groove 55 of the pushbutton-type locking member 53, a | non- stripped conductor 2 1s inserted and is oo presged-in by application on the pressure : surface 53 into the borehole 51, as shown in 213 FIG. 19. - Thereby, the conductor 2 ie deformed in a U-shaped manner, the sharp edges —- 263

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of the borehole 51 cutting into the conductor core 11, and the metallised surface 52 being brought inte electrical cocontact with the conductor core 11. The lutches 56 engage, when emerging from the boreholes 51, behind the rear side of the printed-cirenit board 53, thus the contact connection is secured.

While specific embodiments of the invention have been shown and described in detall,to 19 illnstrate the application of the principles of the invention, 1t will be understood that the invention may be embodied otherwise without departing fro such principles.

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Claims (1)

1. What is claimed i=:

   1. A communication system cpntact for { conductors having ‘an insulating material cover * which may be removed, comprising first and second adjacent contact members made of insulating material and defining firet and second spaced apart post portions having facing sides which define a contact glot therebetween Tn : i ‘ open on al least one side, said facing] sides EE F ! having a metallized material surface topefing 8 : K : rue To Le inwardly and defining a frictions enghafinent 3 \ } . a) go area therebetween for an uncovere portion of 2 " . t . . : , a + . the contact, E i } x * . ) i , th 1 o : 5 : il N cA ’ ’ . - . : & i }

   2. A communication system - Contact according to claim 1, wherein said metallised : material surfaces extend together out of said ’ contact slot. } /

   ‘ 3. a communication syaten contact ’ according to claim 1, wherein gaid system 21 contact comprises a plurality of sete of first BAD ORIGINAL 5] - 22 - he. J a Ce —r v . and second post portions each having metalliseqd surfaces which interconnect and extend out of sald slots. 4, A communication system contact according to olaim 1, including a carrier } comprising a board of insulating material from which said posts project. 5, a communication system contact according to cllaim i, including at least three 1a glide by side post portions With a slot defined between each adjacent two Prost portions,

   6. A communication system according to claim 1, including two gets of gpced apart post portions 2rach eset having interconnecting metallised surfaces and which are Interconnected by a metallised surface. }

   7. A communication syctem contact according to claim 1, including a plurality of 3ide by side post in addition to said first and Tag 2 JH, Mintey 109147 Yq a. i C3 R Ly rt CART — 23 —

   tr . A second post arranged in parallel vertical rovs

   8. a communication system contact according to claim 1, wherein said metallised material surfaces comprise a pair of the post metal plates arranged on respective first and aE gecond posts and providing ‘contact covering material plercing elements which engage into the contact. .

   1 a. A communication gystem contact : according to claims 1, wherein said post are formed on a single carried and have opposed metallised contact cutting edges. © 1p. A communication system contact member according to claim 1, wherein said contact . members are provided at contact legs formed ’ within a clamping slot between a clamping piece for the conductors. : Tact & J ”, TE A J Tn ten - 24 - FIT) 3 ART 4 LAM .

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   11. A contact system contact according to claim 1, including a printed-circuit board containing said post portions, sald printed- cireuit board being formed integral with said post portions and being made of an ingulating malerial such me. plastic.

   12. A communication system contact "according to claim 1, wherein said conbact edges comprise metalliced material edges of 1 substantially V-shaped cross section. y

   13. A commanication system contact according to claim 1, including a comb-type chord element Jdontaining eald posts along an edge thereof and including a U-shape locking - member having elote staggered relative to each other on each elde of eald looking member sald locking member being latchable on a border gection of sald printed clreuit board and allowing an insulation displacement contact of ther conductors. 14, a communication system contact according to claim 1, including a printed circuit-board containing said posts, said poste being arranged along an edge of said board and including a locking member having a glot of a glze to receive an edge of sald circuit-board. .

   15. A communication system contact according to claim 14, wherein sald printed circuit-board includes opposite edges containing a plurality of spaced apart posts 19 which ‘every adjacent two of them defining a slot therebetween for the clamping engagement of a contact in said slot and including a : housing having two housing shell portions engageable over said printed clireuit-board from . each edge thereof said locking members fixed thereon locking sald board with the contact members in position.

   16. A communication system contact according to claim 14, including a printed . 21 circuit member having a plurality of first and second posts arranged In a row and including a . . - 26 - ' [I L '

   locking member engaging over the edge of sald printed circuit-board having said elots and means defining 2 locking projection and recess . between sald locking member and said printed circnit board when they ore interengaged.

   17. A communication system contact according bo claim 14, including a plug carried , On said printed circuit -board having a } plurality of contact terminals, sald metallised curfaces extending over sald printed circeuit- board from a respective slot to a regpective . Lerminal.

   18. a communication syetem contact according to claim 17, wherein eaid locking member includes an axial slot extending along ita edge and cross slots intersecting sald ‘axial slot for the placement of conductor wires : therein. f J / / 19. A communication system contact . : 203 according to claim 1, wherein said metallised : «Tho, no - ‘ ol ; TY ye . ! oA 2A Le a7 - te . J w

   ’ * surfaces defined ocuntting edges having a triangular shape. - i

   2@. A contact member according to claim 19 including a printed circuit board sald at least b one contact section includes a section portion disposed at an elevaticn in said printed circuit beard said beard and said section being congtructed as one plece, «

   21. A contact member according to c¢laim ie 19, wherein gaid contact section includes a . ’ member provided with a conically narrowing contact alot of a size to receive stripped ’ cable wires,

   22. A contact member according to olaim 21, whereln said contact section comprises a carrier, several contacl cection portions each including a contact slot and arranged side by slde on carrier, sald contact section of adjacent contact slots being provided with ragpactive metallised ourfaces which are separated from one another.

   23. A communication system contact according to claim 19, wherein sald cutting edges are spring suspended, Dh 24. A communication system contact member according to olaim 23, wherein said spring suspended cutting edges are constructed from angular pleces being formed in sald insulating material. 1a 25, A centact member according to claim 21, wherein twe pairs of contact sections each include a contact slot and including a carrier element on which sald <ontact rections are disposed and wald metallised surfaces being connected with one another for forming a wire

   . 4 . ‘ connector.

   C26. a contact member according to claim 25, wherein said carrier element and said contact sactions are amde of insu ating material said insulating material having opposed cutting edges provided with metallised surfaces in forming eaid contact recelving slot. O 27. A contact member for an glectrical wire conductor comprising: an insulating material having a contact section defining an eleclrical wire conductor receiving slot with a conductor access opening on at leact one longitudinal end, the slot of sald insulating material having inwardly and downwardly sloping sidee forming an engagement for electrical wire conductor, a metallised surface on at least a portion of the slot of 16 said ineulating material and forming a connecting electrical conduit away from the slot,

   28. A contact member for electrical wire conductores aceording to claim 27, wherein: 29 paid insulating material is a board and the. glot of said insulating material extends into

   . . . said board; a push-button type locking element inaertable into the slot having an insertable end with locking tabs and an outer end having a gkirt portion overlying a portion of said board around said =lot, =2aid insertable end having an inner face forming a channel for engaging the alectrical wire conductor.

   Dieter Gerke Wilhelm Bramkamp Gunter Hegner Lutz Biedersted Robert A.

   Williams N Manfred Muller Wolfgang Radelow Inventors NEI Ca . ' [SE - 31 ~ v